While you hang there, gravity efficiently aligns your head, torso and pelvis.

Keep that chin up: Direct your eyes forward rather than looking down at the ground.

Instead, keep your shoulders relaxed and swing your arms up to your chest and down to your hip.

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All momentum should propel you forward.

Heel strikers jam themselves into the ground, risking lower-back problems.

Landing on your toes puts excess strain on your calf muscles.

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To achieve this alignment, lean forward ever so slightly, about 2 to 3 degrees.

You’ll get a more fluid motion.

Relax fists

This tip is Goucher’s favorite from her high school coach: Keep hands loose.

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Imagine lightly holding a piece of paper between your thumb and second finger.

Clenching your fists causes your muscles to contract, squandering energy.

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